CN210834808U - Combustion and explosion experiment system - Google Patents

Abstract

The application provides a blasting experiment system relates to the blasting experiment field, includes: a blasting container; the mixed gas source is used for providing mixed gas and is communicated with the blasting container so as to lead the mixed gas into the blasting container; and the gas component detection device is used for detecting the proportion of each gas component in the mixed gas. This application is through setting up the gaseous component detection device with mixed air supply intercommunication, and the gaseous component that detects among the mist accounts for the ratio, solves prior art to a certain extent, and the gas mixture concentration that explodes in the experimentation lacks accurate control, leads to the technical problem that experimental data produced great error easily.

Description

Combustion and explosion experiment system

Technical Field

The application relates to the field of combustion and explosion experiments, in particular to a combustion and explosion experiment system.

Background

The explosion experiment device in the prior art generally needs to perform experiments on mixed gas containing multiple components, but the mixed concentration of the multiple components of gas is lack of accurate control in the experiment process, so that the experiment data is easy to generate larger errors.

SUMMERY OF THE UTILITY MODEL

In view of this, the application provides an explosion experimental system, and aim at to a certain extent solves among the prior art, and the explosion experimental process multicomponent gas mixture concentration lacks accurate control, leads to the technical problem that experimental data produces great error easily.

The application provides an explosion experimental system, explosion experimental system includes:

a blasting container;

the mixed gas source is used for providing mixed gas and is communicated with the blasting container so as to lead the mixed gas into the blasting container;

and the mixed gas source is communicated with the gas component detection device, and the gas component detection device is used for detecting the proportion of each gas component in the mixed gas.

Preferably, the mixed gas source comprises a first gas mixing mechanism, and the first gas mixing mechanism comprises:

a pressure vessel, the pressure of the gas output by the pressure vessel being adjustable;

the gas mixing chamber is communicated with the pressure container through the third path;

the first flow component is arranged on the third path and is used for displaying and controlling the flow of the gas flowing through the first flow component;

and a second valve member provided in the third path for connecting or disconnecting the pressure vessel to the gas mixing chamber.

Preferably, the first gas mixing mechanism further comprises a gas mixing spiral pipe, the gas mixing spiral pipe is formed into a spiral shape and is communicated with the gas mixing chamber, and a passivation layer for preventing the gas mixing spiral pipe from being corroded is formed on the inner wall of the gas mixing spiral pipe.

Preferably, the first air mixing mechanism further comprises:

a first path communicating the gas mixing spiral tube with the gas component detecting device;

the second path is communicated with the gas mixing spiral pipe and the blasting container;

a first valve member or valve assembly disposed at the intersection of the first path and the second path and for controlling: the opening of the first path and the opening of the second path, the opening of the first path and the closing of the second path, the closing of the first path and the opening of the second path, and the closing of the first path and the closing of the second path;

and the first check valve member is arranged on the second path and used for limiting the gas in the blasting container to flow to the gas mixing spiral pipe.

Preferably, the air mixing chamber is formed with a cavity portion formed in a segment shape, and the plurality of pressure vessels communicate with the cavity portion via a bottom surface of the segment-shaped cavity portion; the air mixing spiral pipe is communicated with the cavity part through the cambered surface of the cavity part in the shape of a spherical segment;

the junction of the bottom surface and the cambered surface is formed into a fillet.

Preferably, the mixed gas source further comprises a second gas mixing mechanism, and the second gas mixing mechanism comprises:

a vaporizing chamber for containing a mixed liquid and vaporizing the mixed liquid into a mixed vapor;

a gas homogenizing chamber which is communicated with the gasification chamber and is used for stabilizing the flow rate of the mixed steam;

and a fourth path communicating the gas equalizing chamber with the gas component detecting device.

Preferably, the second air mixing mechanism further comprises:

a second flow member disposed on the fourth path for displaying and controlling a flow rate of the mixed vapor flowing through the second flow member;

a fifth path for communicating the gas equalizing chamber with the blasting container;

a third valve member or valve assembly disposed at the intersection of the fourth path and the fifth path and configured to control: the fourth path is opened and the fifth path is opened, the fourth path is opened and the fifth path is closed, the fourth path is closed and the fifth path is opened, and the fourth path is closed and the fifth path is closed;

and the second check valve member is arranged on the fifth path and used for limiting the gas in the blasting container to flow to the gas equalizing chamber.

Preferably, the gas equalizing chamber comprises:

the gas homogenizing fan blade is arranged at the communication position of the gas homogenizing chamber and the gasification chamber and used for fully mixing the mixed steam and stabilizing the flow rate of the mixed steam.

Preferably, the gasification chamber comprises:

a containing and heating section for containing the mixed liquid and heating the mixed liquid;

a first plate member disposed above the receiving heating part, one end of the first plate member in a first direction defining a first preset gap together with an inner side portion of the gasification chamber;

a second plate member disposed above the first plate member on a side opposite the first predetermined gap, the second plate member defining a second predetermined gap in the first direction with an inner side of the gasification chamber.

Preferably, the blasting experiment system further comprises a vacuum extraction device, and the vacuum extraction device is communicated with the blasting container.

This application is through setting up the gaseous component detection device with mixed air supply intercommunication, and the gaseous component that detects among the mist accounts for the ratio, solves prior art to a certain extent, and the gas mixture concentration that explodes in the experimentation lacks accurate control, leads to the technical problem that experimental data produced great error easily.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 shows a schematic view of an assembly drawing of a blasting test system;

FIG. 2 is a schematic view showing the connection between the air mixing chamber and the air mixing spiral pipe;

FIG. 3 shows a schematic view of the connection of the surge chamber to the gasification chamber;

fig. 4 shows a schematic diagram of the operation of the explosion experiment system.

Reference numerals:

1-a gas cylinder; 2-a pressure reducing valve; 3-a first flow meter; 4, switching on and off the electromagnetic valve; 5-air mixing chamber; 6-gas mixing spiral pipe; 7-a first valve member; 8-a first one-way stop valve; 9-a second one-way stop valve; 10-line pressure sensor; 11-a third valve member; 12-a second flow meter; 13-gas homogenizing chamber; 14-homogenizing fan blades; 15-an air pump; 16-a gasification chamber; 17 a-a first plate member; 17 b-a second plate member; 171-a first preset gap; 172-a second preset gap; 18-steamer and heating plate; 19-liquid inlet; 20-gas chromatography; 21-gas chromatograph workstation; 22-high pressure inlet end; 23-an intake valve; 24-an air compressor; 25-air compressor pressure gauge; 26-a third one-way stop valve; 27-a liquid and powder storage chamber; 28-vacuum pump; 29-sensor test point; 30-a temperature sensor; 31-vacuum degree meter; 32-ball safety valve; 33-wire electrode; 34-an intra-ball pressure sensor; 35-observation window; 36-ball pressure gauge; 37-blasting ball. a-a first path; b-a second path; c-a third path; d-a fourth path; e-the fifth path.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

FIG. 1 shows a schematic view of an assembly drawing of a blasting test system; FIG. 2 is a schematic view showing the connection between the air mixing chamber and the air mixing spiral pipe; FIG. 3 shows a schematic view of the connection of the surge chamber to the gasification chamber; fig. 4 shows a schematic diagram of the operation of the explosion experiment system.

Referring to fig. 1 to 4, the explosion experiment system provided in this embodiment includes: the explosion container, the mixed gas source, the gas component detection device and the vacuum extraction device, and the connection relationship and the working principle among the above structures will be described in detail below.

In this embodiment, the mixed gas source is used for providing mist, and the blasting container communicates with the mixed gas source to make mist can be let in the inside experiment that explodes that carries on of blasting container. In this embodiment, the blasting vessel employs a blasting ball 37 of a conventional art, which may have a volume of 20L, and which has a test function as will be described below. In addition, in the present embodiment, the mixed gas source can provide the mixed gas through three gas mixing mechanisms, which will be separately described below.

In this embodiment, the first gas mixing mechanism can mix a plurality of gases that are gaseous at normal temperature to obtain a mixed gas. The first gas mixing mechanism comprises a pressure container and a gas mixing chamber 5, wherein the pressure container can output gas, and the pressure and the flow of the output gas can be adjusted. In this embodiment, the pressure vessel communicates with the gas mixing chamber 5 through a third path c, and a second valve member may be provided on the third path c, the second valve member being configured to control opening and closing of the third path c.

The pressure container may include a gas cylinder 1 storing a certain amount of gas and a pressure regulating member, the third path c and each path described below may be an explosion-proof pipeline common in the prior art, and the pressure regulating member may be a pressure reducing valve 2 common in the prior art, that is, when the gas cylinder 1 is opened, the pressure reducing valve 2 is adjusted, so that the pressure of the gas provided by the gas cylinder 1 can be changed. Further, for example, the second valve member that controls the opening and closing of the third path c may be an on-off solenoid valve 4 that is common in the art.

In this embodiment, the first gas mixing mechanism has a plurality of third paths c, the components arranged on the third paths c are the same as those mentioned in the above description, and each third path c communicated with the gas mixing chamber 5 can be externally connected to the gas cylinder 1, so as to meet the requirement of the explosion experiment on the mixing of a plurality of gases.

As shown in fig. 2, in the present embodiment, the air mixing chamber 5 may include a two-part structure, and the two-part structure may be connected by fastening bolts, so as to facilitate the disassembly and maintenance of the air mixing chamber 5. In this embodiment, the gas mixing chamber 5 has a cavity for containing a plurality of gases therein, the third paths c are communicated with the cavity via the bottom surface of the cavity, and the gas mixing spiral tube 6 is communicated with the cavity via the arc surface of the cavity.

Because the third paths c are communicated with the cavity through the bottom surface of the cavity, and the tail ends of the third paths c are all in the same plane, when multiple gases flow into the cavity through the third paths c, except for the possibility of different speeds, the other physical states (such as speed directions) are the same, and under the condition, the airflow of the multiple gases is naturally converged at the joint of the gas mixing spiral pipe 6 and the cambered surface of the cavity directly or along the cambered inner side part of the cavity, so that the multiple gases can be fully mixed.

In the present embodiment, in order to further increase the time for mixing the plurality of gases and improve the mixing efficiency, as shown in fig. 2, when viewed in the direction of fig. 2, the cross section of the gas mixing chamber 5 is approximated to an arcuate shape surrounded by a minor arc and a chord corresponding thereto. In addition, in order to further improve the mixing degree of the plurality of gases, the following spiral gas mixing pipe may be provided as the vertex (i.e., the highest point) of the arc surface.

It should be noted that, in this embodiment, a rounded corner is formed at the boundary between the bottom surface of the cavity and the arc surface, so that the whole cavity of the gas mixing chamber 5 is of a smooth structure, and the loss of the gas mixture caused by the gas collecting at the boundary between the bottom surface of the cavity and the arc surface is avoided.

On the basis of the above-described features, the first air mixing mechanism may further include an air mixing spiral pipe 6, and the air mixing spiral pipe 6 is communicated with the air mixing chamber 5, and the communication manner is mentioned in the above description and is not described herein again. In this embodiment, the gas mixing spiral pipe 6 is formed in a spiral shape to extend the stroke of the mixed gas, and simultaneously, the speed direction of the mixed gas is continuously changed, so that the mixed gas is sufficiently mixed. The pipe diameter of the gas mixing spiral pipe 6 can be smaller than that of the explosion-proof pipeline adopted by the third path c, so that the flow speed of the mixed gas in the gas mixing spiral pipe 6 is accelerated, and the further mixing of the mixed gas flowing through the gas mixing spiral pipe 6 is realized.

Because in the experimental process, the gas for the experiment may have corrosiveness, and to the gas mixing spiral pipe 6 that the pipe diameter is less, can also form the passivation layer at the inner wall of gas mixing spiral pipe 6, the passivation layer can prevent gas corrosion gas mixing spiral pipe 6 except, can also avoid gas attached to the problem of the gas loss that leads to at the inner wall of gas mixing spiral pipe 6.

In this embodiment, the gas mixing spiral pipe 6 is communicated with the blasting vessel through a second path b, that is, the first gas mixing mechanism is communicated with the blasting vessel through the second path b, and the second path b may be further provided with a first check valve member. For example, the first check valve member may be a first check stop valve 8 for limiting the gas in the blasting vessel from flowing to the gas mixing spiral pipe 6, so as to prevent the first gas mixing mechanism from being damaged due to backflow of the impact gas to the first gas mixing mechanism during the blasting experiment.

In this embodiment, before the explosion experiment, each gas component in the mixed gas mixed by the gas-mixing spiral tube 6 needs to be detected to ensure the accuracy of each gas proportion in the mixed gas in the explosion experiment, and therefore, the gas-mixing spiral tube 6 is also communicated with the gas component detection device through the first path a. The gas component detection device may be a gas chromatograph 20 and a gas chromatograph workstation 21, and the gas chromatograph 20 detects the ratio of each gas in the mixed gas and outputs data through the gas chromatograph workstation 21.

In this embodiment, the first path a and the second path b have an intersection, the first valve member 7 is disposed at the intersection, and the first valve member 7 may be a four-position three-way electromagnetic valve commonly used in the prior art, so that the first valve member 7 can open and close the first path a (i.e., communicate the gas mixing spiral tube 6 with the gas component detecting device, and disconnect the gas mixing spiral tube 6 with the gas component detecting device), and open and close the second path b (i.e., communicate the gas mixing spiral tube 6 with the blasting sphere 37, disconnect the gas mixing spiral tube 6 with the blasting sphere 37), and can also simultaneously close the first path a and the second path b, and simultaneously open the first path a and the second path b.

According to the above description, that is, when the first path a is turned on and the second path b is turned off, the gas chromatograph 20 analyzes the components of the mixed gas; when the components of the mixed gas meet the requirements, the first path a is closed, the second path b is opened, and the mixed gas is introduced into the blasting sphere 37 for blasting. In the present embodiment, a first flow member may be further disposed on the third path c, the first flow member may be a first flow meter 3, and the first flow meter 3 may be capable of displaying and controlling the flow rate of the gas flowing through itself, that is, the component ratio of the gas in the mixed gas is adjusted by adjusting the first flow meter 3 to adjust the flow rate of the gas flowing through the first flow meter 3. When the components of the mixed gas meet the requirements, the first path a can be closed and the second path b can be opened, and when the total amount of the mixed gas reaches a preset value, the on-off solenoid valve 4 closes the third path c, and then the detonation can be carried out.

In order to avoid the interference of the air inside the blasting sphere 37, the second path b and the gas mixing chamber 5 or the gas remaining from the previous experiment on the blasting experiment result and the reduction of the detection efficiency of the gas chromatograph 20 by the air in the first path a or the gas remaining from the previous experiment in the above process, before the gas mixing, a vacuum extraction device is used to vacuumize the blasting sphere 37, the first path a, the second path b and the gas mixing chamber 5 in the present embodiment to eliminate the interference of the air or the gas remaining from the previous experiment.

In this embodiment, the vacuum extraction device may be a vacuum pump 28, and the blasting sphere 37 may further be provided with a vacuum gauge 31 matched with the vacuum pump 28, so as to monitor the vacuum degree inside the blasting sphere 37 through the vacuum gauge 31. Specifically, when the on-off solenoid valve 4 on the third path c is closed, the first path a and the second path b are simultaneously opened, the vacuum pump 28 is operated, and when the vacuum degree displayed by the vacuum degree meter 31 satisfies the requirement, the vacuum pump 28 is stopped.

In addition, in the present embodiment, the third path c may be provided with a line pressure sensor 10 (not shown on the third path c) to monitor the pressure change of the third path c in real time.

However, it is not limited thereto. In this embodiment, the control of the opening and closing of the first path a and the second path b may also be: the four-position three-way valve has the advantages that the on-off electromagnetic valve is arranged on the first path a behind the intersection of the first path a and the second path b, the other on-off electromagnetic valve is arranged on the second path b behind the intersection, and the two on-off electromagnetic valves form the first valve component.

According to the technical characteristics described above, the working process of the explosion experimental system in the case where the first gas mixing mechanism provides the mixed gas will be described below.

The method comprises the following steps: the first valve member 7 opens the first path a and opens the second path b, and the third path c on-off solenoid valve 4 is closed, in which case the first path a and the second path b communicate and the second path b communicates with the inside of the gas mixing chamber 5, and the vacuum pump 28 evacuates until the vacuum gauge 31 reaches a preset value.

Step two: the first valve member 7 opens the first path a and closes the second path b to communicate the gas mixing chamber 5 with the gas chromatograph 20, the on-off solenoid valve 4 is opened, and the pressure reducing valve 2 and the first flowmeter 3 are adjusted until the components of the mixed gas meet the requirements.

Step three: the first valve member 7 closes the first path a and opens the second path b, the mixed gas enters the blasting sphere 37, when the total amount of the mixed gas reaches a preset value, the on-off solenoid valve 4 closes the third path c, and the first valve member 7 closes the first path a and closes the second path b.

Step four: detonating the gas and measuring the parameters.

It should be noted that:

first, in the present embodiment, since the component ratios of each gas in the mixed gas are adjusted by adjusting the pressure and flow rate of each gas, the mixing process of the gases is a real-time and synchronous process. When the total amount of the required mixed gas reaches a preset value, all the third paths c can be closed.

Secondly, in this embodiment, the blasting ball 37 further includes: the sensor test point 29 is used for installing a sensor to measure the parameters inside the exploding sphere 37; a temperature sensor 30 for measuring the temperature inside the exploding sphere 37; a ball safety valve 32 for ensuring safety of the blasting ball 37; the electrode wire 33 is used for being externally connected with a power supply to excite electric sparks to ignite the mixed gas; an in-sphere pressure sensor 34 for monitoring the pressure inside the blasting sphere 37 in real time; a sphere pressure gauge 36 for indicating the pressure value in the sphere; and the observation window 35 is used for observing the blasting process of the mixed gas in the blasting experiment process.

Thirdly, the above-mentioned gas refers to the gas stored in the single gas cylinder 1, but it does not mean that the gas stored in the single gas cylinder 1 is pure, that is, the gas stored in the single gas cylinder 1 itself may be a mixture of gases, such as natural gas.

Fourthly, at the moment of closing the first path a and opening the second path b, because the second path b is in a vacuum state, the pressure in the third path c, the gas mixing chamber 5 and the second path b suddenly drops, and in order to ensure the accuracy of the total amount of the mixed gas, the total amount of the mixed gas is determined after the pressure signal shown by the pipeline pressure sensor 10 is stable.

In this embodiment, the explosion experiment system further includes a control system, and the control system may be a PIC (Programmable Interrupt Controller) control system.

When the power supply of the explosion experiment system is started, the PIC control system controls the first valve member 7 to open the first path a and open the second path b, the on-off electromagnetic valve 4 on the third path c is closed, and the vacuum pump 28 vacuumizes. When the vacuum degree meter 31 reaches the vacuum degree requirement, the PIC control system is triggered, the PIC control system controls the first valve member 7 to open the first path a and close the second path b, and at the moment, the operator adjusts the first flow meter 3 and the pressure reducing valve 2. When each gas component in the mixed gas meets the requirement, the gas chromatograph 20 sends a signal to the PIC control system, and the PIC control system controls the first valve member 7 to close the first path a and open the second path b. When the pressure signal shown by the pipeline pressure sensor 10 (the pipeline pressure sensor 10 is electrically connected with the PIC control system) is stable and the flow rate of the mixed gas reaches the preset value of the PIC control system, the PIC control system controls the on-off electromagnetic valve 4 to close the third path c, and controls the first valve member 7 to close the first path a and close the second path b.

In this embodiment, the mixed gas source further includes a second gas mixing mechanism, and in this embodiment, the second gas mixing mechanism mainly mixes the vapor generated by the evaporation of the multiple liquids, which will be described in detail below.

The second gas mixing mechanism comprises a gasification chamber 16 and a gas homogenizing chamber 13 communicated with the gasification chamber 16. The vaporizing chamber 16 is provided therein with a housing and heating unit for housing a plurality of liquids and vaporizing the plurality of liquids by heating. In this embodiment, the accommodating and heating part may be a steamer and a heating plate 18 (for example, refer to fig. 3), and the heating plate may be disposed below the steamer to improve the efficiency of liquid vaporization during heating. The various liquids can be mixed and then added into the steamer through the liquid inlet 19 on the side part of the gasification chamber 16, or can be added into the steamer through the liquid inlet 19 respectively and then heated and gasified into steam through the heating disc.

In this embodiment, an air pump 15 is disposed on a pipeline connecting the vaporizing chamber 16 and the air equalizing chamber 13, and the air pump 15 is configured to pump mixed vapor formed by vaporizing the plurality of liquids into the air equalizing chamber 13. In view of the fact that the air pump 15 has a certain pumping capacity and the liquid may splash during the heating process, in order to avoid the situation that the air pump 15 directly pumps the liquid droplets into the air equalizing chamber 13 and the liquid is not sufficiently gasified, in the present embodiment, a first plate member 17a is further disposed above the steamer and the heating plate 18, and one end of the first plate member 17a in the first direction and the inner side portion of the gasifying chamber 16 jointly define a first preset gap 171 for the mixed steam to pass through.

As shown in fig. 3, the first direction may be a horizontal direction in the drawing, and a first predetermined gap 171 is formed between the left end of the first plate member 17a and the inside of the vaporization chamber 16. Further, in the present embodiment, a second plate member 17b is further provided above the first plate member 17a, and on the side opposite to the first preset gap 171 (i.e., the right side in the drawing), the second plate member 17b defines a second preset gap 172 in the horizontal direction together with the inner side portion of the gasification chamber 16. Thus, under the suction of the air pump 15, the mixed vapor can pass through the first preset gap 171 and the second preset gap 172 in sequence to form a turn-back between the first plate member 17a and the second plate member 17b, so that the stroke of each gas in the mixed vapor is extended, and each gas in the mixed vapor is mixed more sufficiently.

In this embodiment, the air-equalizing chamber 13 is provided with air-equalizing blades 14, and the air-equalizing blades 14 may be coaxially disposed, for example. Rotatably set up in the air equalizing chamber 13 through the bearing, the air equalizing flabellum 14 can be in the face of the intercommunication department of air pump 15 pipeline and air equalizing chamber 13 for it is rotatory that the mixed steam that pumps to air equalizing chamber 13 from vaporizer 16 by air pump 15 can blow air equalizing flabellum 14, and air equalizing flabellum 14 stirs mixed steam at rotatory in-process, makes mixed steam mix more fully, makes the velocity of flow of mixed steam stable behind air equalizing flabellum 14 simultaneously.

In this embodiment, the gas equalizing chamber 13 is communicated with the gas chromatograph 20 through a fourth path d and is communicated with the blasting vessel through a fifth path e (i.e., the second gas mixing mechanism is communicated with the gas chromatograph 20 through the fourth path d and is communicated with the blasting vessel through the fifth path e). As shown in fig. 1, the fourth path d and the fifth path e also have an intersection, in this embodiment, the second air mixing mechanism further includes a third valve member 11, and the third valve member 11 may also be a four-position three-way valve, and the arrangement and the operation principle of the third valve member 11 are the same as those of the first valve member 7 (the arrangement and the operation principle of the third valve member 11 are also the same as those of the first valve member), which will not be described again.

In addition, a second check valve member is further disposed on the fifth path e, and the second check valve member may be a second check stop valve 9, which has the same function as the first check stop valve 8 described above and is not described again here. In addition, the fifth path e is further provided with a second flow component, i.e. a second flow meter 12, for displaying and controlling the flow rate of the mixed steam flowing through the fifth path e, and the vacuum pump 28 can also perform the vacuum pumping process on the uniform air chamber 13, the fourth path d and the fifth path e, which is the same as the vacuum pumping process performed on the mixed air chamber 5, the first path a and the second path b by the vacuum pump 28, and thus, the details are not repeated herein.

According to the technical characteristics described above, the working process of the explosion experimental system in the case where the second gas mixing mechanism provides the mixed gas will be described below.

The method comprises the following steps: the third valve member 11 opens the fourth path d and opens the fifth path e, the second flow meter 12 opens, the air pump 15 closes, and in this case, the fourth path d communicates with the fifth path e, and the fifth path e communicates with the vaporizing chamber 16 and the gas equalizing chamber 13, and the vacuum pump 28 evacuates until the vacuum gauge 31 reaches a preset value.

Step two: and the third valve member 11 opens the fourth path d, closes the fifth path e, communicates the gas homogenizing chamber 13 with the gas chromatograph 20, starts heating the heating plate, opens the air pump 15, and measures the ratio of the mixed steam components.

Step three: the third valve element 11 closes the fourth path d and opens the fifth path e, the mixed gas enters the exploding sphere 37, and the third valve element 11 closes the fourth path d and the fifth path e when the flow value indicated by the second flow meter 12 reaches the preset flow.

Step four: detonating the gas and measuring the parameters.

In addition, in the present embodiment, the fifth path e may also be provided with the line pressure sensor 10 to monitor the pressure change of the fifth path e in real time. The PIC control system controls the second gas mixing mechanism in a similar manner to the first gas mixing mechanism, and will not be described herein again.

In this embodiment, the gas mixing device further includes a third gas mixing mechanism, where the third gas mixing mechanism includes a high-pressure gas inlet end 22 and can be connected to a high-pressure gas source; an intake valve 23 for opening and closing the high-pressure intake port 22; the air compressor 24 is used for compressing the gas entering from the high-pressure gas inlet end 22 and inputting the gas into the blasting sphere 37; and an air compressor pressure gauge 25 for indicating the operating pressure of the air compressor 24.

In this embodiment, the third air mixing mechanism is a structure approximately symmetrical with respect to the blasting ball 37 to improve the air intake efficiency, and only one side structure is labeled in fig. 1. A third one-way stop valve 26 is further disposed between the air compressor 24 and the pipeline of the blasting ball 37, and the function of the third one-way stop valve is the same as that of the first one-way stop valve 8, which is not described in detail herein.

In this embodiment, the third air mixing mechanism further includes a powder storing and storing chamber 27, the powder storing and storing chamber 27 may include an inlet (not shown in the figure), liquid or dust may be added into the powder storing and storing chamber 27 through the inlet, and the powder storing and storing chamber 27 is also provided with the above-mentioned heating portion structure, which can contain liquid or dust and can be heated to evaporate the liquid. When the liquid is heated to be vapor or the dust is contained in the containing heating portion, the vapor or the dust can be pressed into the blasting ball 37 by the conveyance of the air compressor 24, and the blasting experiment can be performed.

The working process of the third gas mixing mechanism for gas blasting experiment is described as follows:

the method comprises the following steps: the high-pressure air inlet end 22 is used for air inlet, and the air compressor 24 is used for compressing air to enter the blasting sphere 37;

step two: and (5) detonating the mixed gas and measuring parameters.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all changes that can be made in the details of the description and drawings, or directly/indirectly implemented in other related technical fields, are intended to be embraced therein without departing from the spirit of the present application.

Claims (10)

1. The explosion experiment system is characterized by comprising:

a blasting container;

the mixed gas source is used for providing mixed gas and is communicated with the blasting container so as to lead the mixed gas into the blasting container;

and the mixed gas source is communicated with the gas component detection device, and the gas component detection device is used for detecting the proportion of each gas component in the mixed gas.

2. The blasting experiment system of claim 1, wherein the mixed gas source comprises a first gas mixing mechanism, the first gas mixing mechanism comprising:

a pressure vessel, the pressure of the gas output by the pressure vessel being adjustable;

the gas mixing chamber is communicated with the pressure container through the third path;

the first flow component is arranged on the third path and is used for displaying and controlling the flow of the gas flowing through the first flow component;

and a second valve member provided in the third path for connecting or disconnecting the pressure vessel to the gas mixing chamber.

3. The blasting experiment system according to claim 2, wherein the first gas mixing mechanism further comprises a gas mixing spiral pipe, the gas mixing spiral pipe is formed into a spiral shape and is communicated with the gas mixing chamber, and a passivation layer for preventing the gas mixing spiral pipe from being corroded is formed on the inner wall of the gas mixing spiral pipe.

4. The blasting experiment system of claim 3, wherein the first gas mixing mechanism further comprises:

a first path communicating the gas mixing spiral tube with the gas component detecting device;

the second path is communicated with the gas mixing spiral pipe and the blasting container;

a first valve member or valve assembly disposed at the intersection of the first path and the second path and for controlling: the opening of the first path and the opening of the second path, the opening of the first path and the closing of the second path, the closing of the first path and the opening of the second path, and the closing of the first path and the closing of the second path;

and the first check valve member is arranged on the second path and used for limiting the gas in the blasting container to flow to the gas mixing spiral pipe.

5. The blasting test system of claim 3,

a cavity portion formed in the air mixing chamber, the cavity portion being formed in a segment shape, the plurality of pressure vessels being communicated with the cavity portion via a bottom surface of the segment-shaped cavity portion; the air mixing spiral pipe is communicated with the cavity part through the cambered surface of the cavity part in the shape of a spherical segment;

the junction of the bottom surface and the cambered surface is formed into a fillet.

6. The blasting experiment system according to any one of claims 1 to 5, wherein the mixed gas source further comprises a second gas mixing mechanism, and the second gas mixing mechanism comprises:

a vaporizing chamber for containing a mixed liquid and vaporizing the mixed liquid into a mixed vapor;

a gas homogenizing chamber which is communicated with the gasification chamber and is used for stabilizing the flow rate of the mixed steam;

and a fourth path communicating the gas equalizing chamber with the gas component detecting device.

7. The blasting experiment system of claim 6, wherein the second gas mixing mechanism further comprises:

a second flow member disposed on the fourth path for displaying and controlling a flow rate of the mixed vapor flowing through the second flow member;

a fifth path for communicating the gas equalizing chamber with the blasting container;

a third valve member or valve assembly disposed at the intersection of the fourth path and the fifth path and configured to control: the fourth path is opened and the fifth path is opened, the fourth path is opened and the fifth path is closed, the fourth path is closed and the fifth path is opened, and the fourth path is closed and the fifth path is closed;

and the second check valve member is arranged on the fifth path and used for limiting the gas in the blasting container to flow to the gas equalizing chamber.

8. The blasting experiment system of claim 7, wherein the gas equalizing chamber comprises:

the gas homogenizing fan blade is arranged at the communication position of the gas homogenizing chamber and the gasification chamber and used for fully mixing the mixed steam and stabilizing the flow rate of the mixed steam.

9. The blasting experiment system of claim 6, wherein the gasification chamber comprises:

a containing and heating section for containing the mixed liquid and heating the mixed liquid;

a first plate member disposed above the receiving heating part, one end of the first plate member in a first direction defining a first preset gap together with an inner side portion of the gasification chamber;

a second plate member disposed above the first plate member on a side opposite the first predetermined gap, the second plate member defining a second predetermined gap in the first direction with an inner side of the gasification chamber.

10. The blasting test system according to claim 6, further comprising a vacuum extraction device in communication with the blasting vessel.

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